Hugging Face
https://huggingface.co/
Transformers library
The Hugging Face Hub
Tools and services for building and deploying ML applications

Amazon SageMaker
Build, train, and deploy machine learning models for any use case with fully managed infrastructure, tools, and workflows

Model zoo
modelzoo.co
Model Zoo curates and provides a platform for deep learning researchers to easily find pre-trained models for a variety of platforms and uses.